I would ask what percentage of psychologists didn't meet the requirements. Also, I can't speak to how the program was run in the 1900s (I have heard it was an absolute cluster), but the Biden administration made it very easy. If you can find the correct email address for your HR department (which they admittedly make stupidly tedious depending where you work) and your workplace's EIN (Googlable), that's all you need.
Again, don't know how it was before, but it is incorrect that of you miss one payment or one signature that you get dropped. The program specifically states that it requires 120 nonconsecutive qualifying payments. If you miss one, your total just stays at the same count it was, it does not go to 0. A qualifying payment just means the minimum payment while working at a non-profit/etc. and that you're not in forbearance or a grace period. As for signatures, you just need someone to confirm that you worked at the qualifying institution for the months that you did. People recommend that you do this every year (maybe it was required before, but not now), but you could literally wait until your 120th month to do it. You just put the month you started working at the place in the online form and that's it. When the HR person confirms, all the months get added to your count, no matter how long ago you started.
I do hope this program sticks around. I'm not convinced anything will happen to it long-term, but no one can know what to rely on for this administration. As for EDRP, I'm pretty worried you guys are definitely ****ed.